Vienna is rife with brothels and redolent of sin, but when its Duke decamps, his deputy takes a hard right on transgressors. Mocking hypocrisy and skewering corrupt authority, Shakespeare weaves a morality tale where the falsely virtuous are exposed and true-hearted victims rewarded. Not his first swipe at the Puritans who disapproved of many things in Elizabethan society – including plays and playwrights – Shakespeare’s sharp-witted tale takes its title from the New Testament Book of Matthew: “For with what judgment ye judge, ye shall be judged: and with what measure ye mete, it shall be measured to you again.”